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Budget: 27000 UAH Deadline: 45 days

The benchmark for the first working MVP is 320,000 UAH and about 45 days. I would include in this estimate a Windows client, selection of audio devices, sample upload, streaming processing via a server with GPU, faster - better modes, assembly into a single .exe, and measurement of actual latency. The goal of 400 ms is realistic only after testing the model, network, and audio drivers, so we can start with a short engineering prototype.

An important point - we only work with voices where there are rights for use and consent from the owner. For such a product, I would add scenario limitations, logging, and clear labeling, because otherwise, the risk is not technical, but legal and reputational. Look, there’s a nuance - the devil is not in the interface, but in the latency and artifacts =)

> On implementation
>> Windows application for microphone, output, and virtual audio cable
>> separate GPU service for real-time voice conversion
>> level, latency, and network status indicators
>> quality modes, test profiles, and packaging into .exe

Mobile app with admin
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  • Rating 117

Budget: 3000 UAH Deadline: 2 days

I can do this for 3k with the help of vibe coding. I have already done something similar. The requirements are that you have a powerful graphics card or money for cloud AI.

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  • Rating 196

Budget: 27000 UAH Deadline: 45 days

we already have a nearly ready architecture for such a voice AI product, it can be quickly adapted and launched for a Windows client, GPU server, and virtual audio cable
we are in touch, we can discuss the details here on the platform

the estimate for the first working stage is 260,000 UAH and about 45 days

We can keep the start simple - I would go through a technical prototype with measurable latency, and then improve the voice quality
the goal of 0.3-0.5 seconds is achievable only with careful stream processing, buffer tuning, model, and network

- I will clarify 2 points
-- do we need a recognizable voice of a specific person or is a change in timbre and speech manner sufficient

  • Projects 20
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  • Rating 2 116

Budget: 26000 UAH Deadline: 22 days

I understood the technical specifications: Windows application, real-time voice conversion (microphone → target voice → virtual audio cable), target latency ≤400ms, server-side on GPU. Sample target voice — one file 1-5 minutes. .exe for distribution, UI with device selection, model training, level and latency indicators.

Stack as I see it.

Voice model. For real-time voice conversion with 400ms latency and quality without artifacts, the best option in 2026 is RVC (Retrieval-based Voice Conversion) or its evolution Seed-VC. RVC is trained on short samples, supports real-time inference on GPU 12GB+. An alternative is F5-TTS or OpenVoice v2 from MyShell for voice cloning (but they are more for batch generation, real-time with them is harder to keep within 400ms). RVC inference on RTX 3060/4060 gives a confident 200-300ms per chunk, which fits the budget.

Architecture. A thin Windows client (Python + Qt or C# WPF) captures the microphone via WASAPI/PyAudio, breaks it into chunks of 100-150ms, sends to the GPU server via WebSocket with low-latency options (ping-pong keepalive, no buffering). The server performs inference and returns the processed audio chunk. The client writes to the virtual audio cable (VB-Audio Virtual Cable as the standard for Windows). Latency budget: 30ms capture + 50ms network round-trip (if on the same network) + 200ms GPU inference + 30ms playback = ~310ms. If the server is remote (cloud GPU) — network round-trip can increase to 80-150ms, plus dependency on connection stability.

UI. Tkinter or PyQt5 for the Windows client (I have production experience with PyQt5 specifically for this class of tasks). Device selection — through pyaudio.list_devices() with Input/Output filter. Uploading sample voice, sending to the server, model training (training step synchronous or background). Start/Stop button. Indicators — microphone level (RMS), real-time latency (rolling average over the last 50 chunks), connection status.

  • Projects 5
  • Rating 4.2
  • Rating 690

Budget: 16000 UAH Deadline: 14 days

Hi, write to me in private messages. I think I can handle it, I've done something similar, but I need a more detailed technical specification. I will outline how many tokens it will take, etc.

  • Projects 20
  • Rating 5.0
  • Rating 9 264

Budget: 25000 UAH Deadline: 6 days

Hello. A year ago, I created a similar solution for Windows in .exe format for real-time voice conversion. I have working developments; now I need to update the packages, adapt them to your requirements, and test the connection between the Windows client and the GPU server. I believe I can quickly bring this to MVP.

  • Projects 15
  • Rating 5.0
  • Rating 3 857

Budget: 27000 UAH Deadline: 7 days

Good afternoon.
I am currently working on TTS systems like Cartesian/Inword and local LLMs such as XTTS-v2 (Coqui).
It's not as simple as it seems; TTS is one thing, and STT is another, and a unified solution doesn't always yield acceptable results. Sometimes the TTS is poor, or the STT latency is unsuitable, or the recognition quality doesn't meet your goals. To achieve your target of 400ms, some adjustments are necessary. Basically, I am currently focused on this and trying to achieve a latency of at least 1 second.
I am a senior developer, working on an hourly rate of 30 euros/hour for this task.
It's hard to say how long the core will take; it could be 10 hours or even 40 hours, plus a wrapper for Windows.
If this suits you, my rate is acceptable for you - welcome. I always deliver quality work.
If we communicate, I will provide a more accurate cost estimate for such a project.

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  • Rating 258

Budget: 27000 UAH Deadline: 50 days

We have experience in developing AI/audio realtime solutions, including work with voice conversion, streaming audio, GPU inference, and low-latency sound processing.

We understand the specifics of the realtime voice changing task:
— capturing and processing audio streams;
— voice cloning from a short sample;
— minimizing latency;
— integration with Discord / Zoom / OBS via virtual audio devices;
— building a desktop application for Windows in .exe.

We can implement:

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  • Rating 556

Budget: 11111 UAH Deadline: 30 days

Hello! I am implementing real-time voice conversion with low latency and a client (Windows) + server with GPU inference.

I have experience with AI integrations and real-time systems (WebRTC/streaming/low-latency processing), so I can design the architecture for this case.

Architecture:

* Windows desktop client (UI + audio stream)
* Virtual audio driver / loopback (VB-Cable or similar)
* Backend server with GPU (model inference)
* Streaming via WebSocket / gRPC

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  • Rating 246

Budget: 2500 UAH Deadline: 2 days

Good day, I am ready to take on the project, I have experience in creating similar work.

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